Rosita and Zoe are on the steps of 123 Sesame Street arguing over a doll when Herb swings his neck overhead. He introduces himself, and suggests a solution from his own experience to address the problem at hand; however, Zoe notes that they might get hurt and suggests a simpler solution: Taking turns. They explain the concept of taking turns to Herb, who sings "You Learn Something New Every Million Years."

As they sing, Herb comes back and introduces himself. He explains that he and his cousin Shirley (who he hasn't seen in 150 million years) are the lone surviving dinosaurs on Earth. The Birdketeers explain to Herb what the alphabet is, and they all sing the song together. Afterward, Herb walks off to learn more new things, and the Birdketeers recite their song again.

SCENE, cont'd

Slimey wants to play, but Oscar is too busy giving his elephant, Fluffy, a bath. Maria comes by, and asks why Slimey looks so sad. Then Herb looms up over them, startling Maria. Oscar suggests that Slimey can play with the dinosaur. Slimey happily climbs on Herb's neck and goes for a ride. Maria can't believe what she's seen, and runs off to tell everybody.

SCENE, cont'd

Gordon refuses to believe in the dinosaur, even though Maria, Big Bird, Elmo and Alan all claim to have seen him. The others leave Gordon alone to sit on the stoop -- and then Gordon sees Herb walk by, with Slimey riding on his back!

The Letter of the Day:WCookie Monster attempts to convince himself not to eat the letter cookie, naming words that begin with the letter instead. Prairie Dawn walks by, but Cookie Monster is too deep in thought to notice her presence. When Prairie finally receives Cookie's attention, he eats the cookie!(First: Episode 3992)

Ernie and Bert: Caveperson DaysCaveman Bert reminds Caveman Ernie (his son) to take out the trash. Ernie realizes that his drum can also be used as a wastebasket, and is able to take several pieces of garbage to the dump at once instead of one at a time.(EKA: Episode 2888)

Cartoon

A cat desperately tries to open a can of cat food by himself while his mistress is on the phone.Animation by Dan Haskett(EKA: Episode 2424)

Global Grover:Grover returns from Puerto Rico with a guiro -- a musical instrument made from a piece of fruit. In his film, Aniba makes a guiro from a marimbo. Afterward, Grover tries playing another instrument -- a watermelon -- without success.(EKA: Episode 4077)